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  1. #1
    Join Date
    Mar 2007
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    Another Chiller Teardown & Rebuild

    770 ton Trane CVHF, bearing failure and a worn oil seal

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    Removing the economizer

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    Economizer sealed up for storage to prevent rust

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    Rigging of suction elbow

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    Removing suction elbow

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    Suction elbow covered to prevent rust

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    Compressor and evaporator flanges covered to prevent rust and prevent debris from falling in

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    Preparing to remove suction cover

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    Removing suction cover

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    Rigging the suction cover down and a shot of one of the work-tables where all of the tools return when we are done with something

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    Checking the run-out of the 1st stage impeller
    The key to happiness is lower expectations.

  2. #2
    Join Date
    Mar 2007
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    Name:  11.jpg
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    This is where the inter-stage shaft seal mounts on the 1st stage diffuser

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    Looking at the motor journal bearing support with the oil seal, mounting plate, and internal oil line removed

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    Setting up the dial indicator to make sure we do not move the shaft too much when we remove the bearing and bearing support

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    Another shot of the dial indicator setup

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    The failed journal bearing

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    Dowel pins installed to make sure the bearing support goes back exactly where it was before

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    Removal of bearing support - we monitored the shaft at all times with the dial indicator as it could move no more than .003" in any direction

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    Another shot of the removed journal bearing support and the bad back oil seal

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    Inside the motor

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    Last edited by Tech Rob; 10-29-2012 at 10:23 PM.
    The key to happiness is lower expectations.

  3. Likes milkyway liked this post.
  4. #3
    Join Date
    Jul 2006
    Location
    Anytown USA
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    Something wrong with the second post, I cant see the pictures, first post is ok.

  5. Likes milkyway liked this post.
  6. #4
    Join Date
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    Quote Originally Posted by y7turbo View Post
    Something wrong with the second post, I cant see the pictures, first post is ok.
    Fixed. This new site format is glitchy.
    The key to happiness is lower expectations.

  7. #5
    Join Date
    Jul 2006
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    Quote Originally Posted by Tech Rob View Post
    Fixed. This new site format is glitchy.
    Works now, Thanks for sharing.

  8. #6
    Join Date
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    Quote Originally Posted by y7turbo View Post
    Works now, Thanks for sharing.
    Thanks for checking it out and commenting!
    The key to happiness is lower expectations.

  9. #7
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    Jul 2006
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    Any idea on what the weights were on the parts you removed?

  10. #8
    Join Date
    Mar 2007
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    Economizer 840#
    Suction elbow 700#
    1st vane assy. 400#
    Suction cover 1700#
    Inter-stage 2000#

    Also a couple of smaller items between 50# and 200#
    The key to happiness is lower expectations.

  11. #9
    Join Date
    Jul 2009
    Location
    Columbia, MD
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    that is cool! it looks like you know what your doing

  12. #10
    Join Date
    Mar 2007
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    Thanks! My motto is "fake it until you make it"!!!
    The key to happiness is lower expectations.

  13. #11
    Join Date
    Jul 2006
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    Quote Originally Posted by Tech Rob View Post
    "fake it until you make it"!!!

  14. #12
    Join Date
    Oct 2005
    Location
    USA
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    Wow. thanks for sharing the pics. I would love to do a tear down like that. nice job!
    RTFM!!!

  15. #13
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
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    I've never seen that bearing bracket removed while the motor is still mounted to the discharge volute. Do you plan to replace the motor-to-volute o-ring? How about the discharge volute-to-condensor o-ring? Appreciate the pics. Very nice equipment room... once you get past the chilled water lines above the starter.

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